Technical Field
[0001] The field of this invention is ground engaging tools, and more specifically systems
for retaining ground engaging tools on buckets, blades, and other work tools.
Background
[0002] Many construction and mining machines, such as excavators, wheel loaders, hydraulic
mining shovels, cable shovels, bucket wheels, and draglines make use of buckets to
dig material out of the earth. The buckets can be subjected to extreme wear from the
abrasion and impacts experienced during digging. Other construction and mining machines,
such as bulldozers, also include blades or other tools that are used to move material
such as soil and rock. These blades and other tools can also be subjected to extreme
wear through abrasion and other wear mechanisms.
[0003] Buckets and blades and other earth-working tools can be protected against wear by
including ground engaging tools (GET). GET is typically fashioned as teeth, edge protectors,
and other components which are attached to the bucket or blade in the area where the
most damaging abrasion and impacts occur. For example, the cutting edge of a bucket
can be protected with edge protectors that wrap around and protect the edge.
[0004] Thus, one purpose of the GET is to serve as wear material and absorb wear that would
otherwise occur on the bucket, blade, or other tool. The GET can be removed when it
has been worn and replaced with new GET at a reasonable cost to continue to protect
the bucket. Large buckets for draglines and hydraulic shovels can cost a considerable
amount, so protecting them against wear and the need for early replacement is important.
It is more economical to wear out and replace the GET than to wear out and replace
an entire bucket.
[0005] In addition to the purpose of protecting against wear, another purpose of the GET
may be to provide more effective digging. A tooth mounted on the edge of a bucket,
for example, may allow the bucket to penetrate into the soil or rock and dig more
effectively with less effort.
[0006] Many systems have been proposed and used for removably attaching the GET to buckets
and other tools. These systems typically provide a pin or other fastener which holds
the GET onto the bucket or other tool. Many problems or disadvantages exist with these
known systems. For example, in some conditions the pins can become stuck inside the
GET because of rust or because other material gets in the space surrounding the pins
and causes binding or adhesion. As another example of a disadvantage of some known
attachment systems, some require a hammer to drive in the pin or other fastener. On
large GET systems, the hammer required to drive in the pin may likewise be very large,
and swinging such a large hammer in difficult field conditions can be objectionable
for the technician.
[0007] The pin or other fastener must be very secure and reliable and not permit the GET
to fall off of the bucket or other work tool, even when the GET is worn extensively.
If the GET falls off of the bucket or blade, it could be fed into a crusher or other
processing machine and cause damage. Other problems may also occur if the GET inadvertently
falls off the bucket, including extensive wear of the exposed area of the bucket left
unprotected when the GET fell off which might occur before the problem is detected
and repaired. The prior art GET attaching systems have not always held the GET to
the bucket or other work tool with adequate reliability.
[0008] WO 2004/027272 A2 discloses a coupling arrangement for securing two separable components in an excavating
operation. The coupling arrangement includes a wear component, a base component and
a lock. The lock has a body having a configuration adapted to be received in a hole
in the base component, and a rotatable locking member.
[0009] In general, the prior art GET attaching systems leave room for improvement. This
invention provides improvements.
Brief Description of the Drawings
[0010]
FIGS. 1-3 are schematic assembly views representing a GET attachment system according
to the principles of the invention. In FIG. 1, a post (normally attached to the adapter)
is sliding into the slot of a lock, the lock being engaged with the tip. In FIG. 2,
the post is engaged in the slot, and in FIG. 3, the lock is rotated to the locking
position.
FIG. 4 is a pictorial view of a tip, locking retainer, and lock of a first embodiment,
and the manner in which they may be assembled together.
FIG. 5 is a pictorial view of the tip, retainer bushing, and lock assembly according
to the first embodiment of FIG. 4, with the lock in an unlocking position.
FIG. 6 is a side view of the assembly of FIG. 5.
FIG. 7 is a rear view of the assembly of FIG. 5.
FIG. 8 is sectional view of the assembly of FIG. 5, taken along plane 8-8 indicated
in FIG. 7.
FIG. 9 is a pictorial view of the tip, retainer bushing, and lock assembly according
to the first embodiment of FIG. 4, with the lock in a locking position.
FIG. 10 is a side view of the assembly of FIG. 9.
FIG. 11 is a rear view of the assembly of FIG. 9.
FIG. 12 is sectional view of the assembly of FIG. 9, taken along plane 12-12 indicated
in FIG. 11.
FIG. 13 is a pictorial view of an adapter according to the first embodiment.
FIG. 14 is an assembly view of the tip, retainer bushing, lock, and adapter assembly
according to the first embodiment.
FIG. 15 is a sectional view of the assembly of FIG. 14, taken along plane 15-15 of
FIG. 14, with the lock in a locking position.
FIG. 16 is a sectional view of the assembly of FIG. 14, taken along plane 15-15 of
FIG. 14, with the lock in an unlocking position.
FIG. 17 is a sectional view of the adapter of FIG. 15 (the tip, retainer bushing,
and lock have been removed in this view).
FIG. 18 is a sectional view of the tip, lock, and retainer bushing of FIG. 15 (the
adapter has been removed in this view).
FIG. 19 is a sectional view of the tip and retainer bushing of FIG. 15 (the adapter
and lock have been removed in this view).
FIG. 20 is a sectional view of the tip of FIG. 15 (the adapter, lock, and retainer
bushing have been removed in this view).
FIGS. 21A-E are views of the lock of the first embodiment.
FIGS. 22A-E are view of the retainer bushing of the first embodiment.
Detailed Description
[0011] FIGS. 1-22 illustrate embodiments and schematic concepts for GET attachment systems
according to the invention. The purpose of these figures is only to aid in explaining
the principles of the invention. Thus, the figures should not be considered as limiting
the scope of the invention to the embodiments and schematic concepts shown therein.
Other embodiments of GET attachment systems may be created which follow the principles
of the invention as taught herein, and these other embodiments are intended to be
included within the scope of the appended claims.
[0012] FIGS. 1-3 demonstrate schematically how the GET attachment system holds the GET onto
the bucket or blade, and how it locks and unlocks.
[0013] With reference first to FIG. 1, a post, or pin, 10 is illustrated. The post 10 may
be connected or associated with a bucket, blade, or other work tool. In FIG. 1, only
a portion of the post 10 is shown. The portion of post 10 that connects with the bucket,
blade, or other work tool has been removed from this view for the purpose of illustrating
the manner in which the GET attachment system interacts with the post. A lock 20 is
also illustrated. The lock 20 includes a slot 21 formed therein for accepting a portion
of post 10. Lock 20 is received in a lock cavity 41 of a tip 40. The lock cavity 41
is shaped to allow the lock 20 to fit therein, and also to allow lock 20 to rotate
relative to tip 40. Lock 20 may be placed in lock cavity 41 directly, or a retainer
bushing 30 may be disposed around a portion of lock 20, and disposed between the lock
20 and lock cavity 41. The purpose and benefits of the optional retainer bushing 30
will be explained in greater detail hereinafter.
[0014] With reference now to FIG. 2, a pictorial view is shown of the post 10 positioned
inside of the slot 21 of lock 20. In order for the post 10 to enter slot 21, it may
be required to pass through a slot 42 formed in tip 40. This will occur typically
by sliding the tip 40 and lock 20 onto a portion of the bucket, blade, or work tool
and onto post 10. For example, a bucket may include an adapter with an adapter nose
that fits inside of pocket 43 formed in tip 40, in a manner well known in this industry.
The post 10 may be connected with the adapter. The post 10 will slide first through
slot 42, then into slot 21. Slot 21 need not be a through slot as illustrated, but
could also be a blind slot similar to slot 42. With the lock 20 rotated to the orientation
relative to the tip 40 that is depicted in FIG. 2, the post 10 can freely slide into
and out of the slot 21. This first position of the lock 20 is the unlocking position.
[0015] With reference now to FIG. 3, the lock 20 has been rotated, in this case 180 degrees,
to a new orientation relative to the tip 40. This second position of the lock 20 is
the locking position. In the locking position, the opening of slot 21 is no longer
aligned with slot 42. Lock 20 includes a C-shaped portion formed by a rear leg 22
joining together a top leg 23 and an opposite bottom leg 24. Slot 21 is located between
the opposing top leg 23 and bottom leg 24. In the locking position of lock 20 shown
in FIG. 3, rear leg 22 blocks the post 10 from exiting the slot 21 and sliding out
through the slot 42. Thus, with the lock 20 rotated to the locking position, the tip
40 is locked onto the post 10 and the bucket, blade, or work tool to which the post
10 is connected.
[0016] FIGS. 1-3 illustrate schematically the basic functioning of the GET attachment system.
The system may be adapted to many different applications. For example, the system
may be used to attach many different kinds of cutting edges to blades, tips, edge
protectors, side cutters and other accessories to buckets, tips to compactor wheels,
etc. Many variations of the basic designs shown in FIGS. 1-3 are also possible. Those
of ordinary skill in this field will be able to adapt the basic parts to suit a particular
need in a given application. For example, the shapes of post 10, lock 20, and slot
21 may vary widely, according to particular needs in a given application. As another
example, tip 40 may be more broadly defined as a first element 40 which could take
the form of a tip for a bucket or ripper, or could take the form of an edge protector,
sidebar protector, or other forms of GET. As another example, the structure that connects
to post 10 may be broadly defined as a second element, and may take the form of an
adapter permanently or removably attached to a bucket, or may take the form of a bucket
sidebar or base edge, or any other portion of a work tool such to which it is desired
to attach GET. As another example, the way in which the lock 20 is rotated may vary
according to needs of the application. The lock 20 may include a portion that can
be rotated by a tool placed through a bore in tip 40. Or, the end of post 10 may be
modified so it fits in the slot 21 in a way that the post 10 and lock 20 rotate together.
Then a bore in tip 40 may provide access to the end of post 10, and the post 10 could
be rotated causing a corresponding rotation of lock 20. Many different designs are
possible while still utilizing the basic principles of this attachment system.
[0017] FIGS. 4-22 illustrate a first embodiment of a GET attachment system according to
these principles. The first embodiment is also exemplary of many additional, optional
features which may be incorporated to satisfy particular needs or provide optional
benefits.
[0018] With reference first to FIG. 4, a lock 200, retainer bushing 300, and tip 400 are
illustrated. The tip 400 may be manufactured from steel or any other suitable material.
The exterior of the tip 400 features surfaces designed to contact soil and rock, and
absorb or resist the abrasive and impact forces. The exterior surfaces can form a
relatively sharp front edge 401 in order to permit the tip 400 to penetrate into the
soil or rock and facilitate digging. The tip 400 may also include a top portion 402,
a bottom portion 403, and side portions 404. In the design shown in FIG. 4, the top
portion 402, bottom portion 403, and side portions 404 meet together and form the
front edge 401. The top portion 402, bottom portion 403, and side portions 404 also
form an interior adapter receiving cavity 430. The adapter receiving cavity 430 is
shaped to receive the nose portion of an adapter (see FIG. 13). The adapter receiving
cavity 430 opens out of the tip 400 through a rear portion or surface 405. Rear surface
is bordered by the top portion 402, bottom portion 403, and side portions 404. Several
eyelets 406 may be attached to any of the tip exterior surfaces to facilitate lifting
and positioning the tip 400 during installation.
[0019] The tip 400 also includes a slot 410 positioned adjacent a lock cavity 420. Lock
cavity 420 is sized to receive the lock 200, and optionally the retainer bushing 300
therein. Lock cavity 420 also includes a lock opening 421 (FIG. 6) which leads from
the lock cavity 420 to the exterior of the tip 400. Slot 410 includes side walls 411
and a bottom wall 412. Side walls 411 extend away from the adapter receiving cavity
430 towards the bottom wall 412 so that bottom wall 412 is recessed below the surrounding
surface of the adapter receiving cavity 430 and slot 410 is generally contained within
a side portion 404. Side walls 411 and bottom wall 412 may define a plane of symmetry
which extends parallel to the slot's longitudinal axis. The longitudinal axis of slot
410 runs from the rear surface 405 towards the lock cavity 420. The longitudinal axis
of slot 410 may also run parallel to the direction of movement of the tip 400 relative
to the worktool when the tip is inserted on or removed therefrom (see arrow A, FIG.
16). The slot 410 opens up to the rear surface 405 on one end, and to the lock cavity
420 on the other opposite end.
[0020] Retainer bushing 300 can be formed from plastic or any other suitable material. If
formed from plastic, it may be desirable to produce it through injection molding.
Lock 200 can be formed from steel or any other suitable material. If both tip 400
and lock 200 are formed of steel, then having a plastic retainer bushing 300 creates
certain benefits. First, a plastic retainer bushing can prevent metal-to-metal contact,
and the wear mechanisms commonly exhibited with such contact. Second, a plastic retainer
bushing can help prevent corrosion or other processes between the tip and the lock
which, over time, could cause the lock to seize in the tip and make the lock difficult
to rotate. If the lock cannot be easily rotated, then the tip removal from the work
tool is more difficult. Third, a plastic retainer bushing which can deflect more easily
than steel can allow a retaining relationship between the tip and the retainer bushing,
and the lock and the retainer bushing, as described more fully below. Thus, the choice
of plastic to form the retainer bushing 300 can be particularly advantageous.
[0021] With reference to FIG. 4 and FIGS. 22A-E, the retainer bushing 300 includes a slot
310 formed in a substantially circumferential skirt portion 320. The skirt portion
320 may be conically shaped. Attached to the narrower end of the skirt portion 320
is a head portion 330. Head portion 330 includes an opening 331, and a flexible tab
332. Tab 332 flexion is promoted by a relief hole 333 formed in the head portion 330.
[0022] With reference to FIG. 4 and FIGS. 21A-E, the lock 200 includes a slot 210. Slot
210 is formed in a C-shaped portion 220 of the lock 200. C-shaped portion 220 includes
a rear leg 221, top leg 222, and bottom leg 223. Slot 210 is interposed between top
leg 222 and bottom leg 223. On top of C-shaped portion 220 is a head portion 230.
Head portion 230 includes two detents 231, 232, formed therein, and an annular surface
233 positioned between the detents 231, 232. A stopping tab 234 is also formed in
the head portion 230. Head portion also includes a tool interface 235.
[0023] FIGS. 5-8 show views of the lock 200 assembled into the retainer bushing 300, and
the retainer bushing 300 assembled into the tip 400. The lock 200 is rotated to its
first position, or unlocking position in each of these views. While the lock 200 is
in the unlocking position, an adapter or portion of a work tool can be inserted into
the adapter receiving cavity 430, and a post or other portion associated with the
adapter will simultaneously slide through slot 410, slot 310, and into slot 210.
[0024] FIG. 6 is a side view which shows retainer bushing 300 and lock 200 projecting through
lock opening 421 of tip 400. Tool interface 235 is accessible by an appropriate tool
to help rotate lock 200 relative to retainer bushing 300 and tip 400. Any type of
suitable tool and tool interface may be used. Preferably, the tool includes a male
portion, and the tool interface 235 includes a female portion.
[0025] In the unlocking position, tab 332 rests in detent 232. As lock 200 is rotated relative
to retainer bushing 300, tab 332 flexes and comes out of detent 232. FIGS. 9-12 show
the lock 200 rotated to its second position, or locking position. In the locking position,
tab 332 rests in detent 231. Further rotation of lock 200 relative to retainer bushing
300 is prevented by stopping tab 234 contacting the head portion 330 of retainer bushing
300. Likewise, when the lock is rotated back to its unlocking position, stopping tab
234 will contact head portion 330 when tab 332 enters detent 231. This detent and
stop system gives technicians a very good tactile feel for when the lock 200 has been
turned to either its unlocking or locking position. In part the good tactile feel
will come from the retainer bushing 300 being made from plastic and tab 332 being
flexible enough to permit easy rotation, while still providing enough holding power
against detents 231, 232 to hold lock 200 in its unlocking or locking position. Movement
of the lock 200 from its locking to unlocking position does not require use of a hammer
or other tools as is common with many types of pin retention systems for GET. Hammerless
systems are increasingly preferred by technicians.
[0026] When the lock 200 is assembled into the retainer bushing 300. structures on each
help positively hold the two together. Skirt portion 320 of retainer bushing 300 defines
an internal annular surface 340. Lock 200 includes an external annular surface 240.
Internal annular surface 340 rides against external annular surface 240 when lock
200 rotates relative to retainer bushing 300. In this embodiment, the annular surfaces
240, 340 are also tapered, resulting in an overall conical shape. Internal annular
surface includes ribs 341 formed thereon which extend in a substantially circumferential
direction. When lock 200 is positioned inside of retainer bushing 300, the ribs 341
interfere with external annular surface 240. In order to fit lock 200 inside retainer
bushing 300. adequate force must be applied to deflect retainer bushing 300 so ribs
341 can move past external annular surface 240. Once ribs 341 move past external annular
surface 240, ribs 341 and the retainer bushing 300 can return to a more natural, non-deflected
position. Ribs 341 will ride against a bottom surface 224 of C-shaped portion 230,
preventing lock 200 from unintentionally slipping out of retainer bushing 300. Lock
200 is able to rotate inside of and relative to retainer bushing 300.
[0027] Likewise, when the retainer bushing 300 is assembled into lock cavity 420 of tip
400, structures on each help positively hold the two together. Skirt portion 320 of
retainer bushing 300 defines an external surface 350. External surface 350 includes
a rib 351 formed in a substantially circumferential direction. A complementary slot
422 (FIG. 4) is formed in the lock cavity 420 of tip 400. When retainer bushing 300
is assembled into lock cavity 420, the rib 351 first interferes with lock cavity 420.
In order to fit retainer bushing 300 inside of lock cavity 420, adequate force must
be applied to deflect retainer bushing 300 so that rib 35 1 slides past the lock cavity
420 surfaces with which it interferes, until rib 351 snaps into slot 422. Retainer
bushing 300 cannot rotate relative to tip 400 once installed into the lock cavity
420. The fit of rib 351 into slot 422 prevents rotation. Also, the lock opening 421
is non-circular. The part of head portion 330 of retainer bushing 300 which fits into
the lock opening 421 is also non-circular. The fit of the head portion 330 into the
lock opening 421 and the non-circular shape of each also prevents the retainer bushing
300 from rotating relative to the tip 400.
[0028] Holding together, under normal conditions, the lock 200 to the retainer bushing 300,
and the retainer bushing 300 to the tip 400, has several advantages. First, during
shipping of a replacement tip assembly (including tip 400, retainer bushing 300, and
lock 200) to a jobsite, all three components stay together without becoming mixed
up or lost. Second, during installation, it is simple to keep all three components
in position relative to one another while the tip assembly is slid onto an adapter
or other work tool. The installation may sometimes be conducted in challenging field
conditions, including mud and snow. Being able to keep all the components together
prevents them from being dropped into the mud and snow and becoming lost. Further,
a technician who may be wearing protective gloves will not be required to handle the
lock 200 and retainer bushing 300 which are smaller components and may not be as easily
grasped and manipulated. In general, this feature greatly enhances the ease and speed
of installation.
[0029] With reference now to FIGS. 13-17, an adapter 100 is illustrated which may be used
with the tip 400, retainer bushing 300, and lock 200. Adapter 100 includes a nose
portion 110. Nose portion 110 is shaped to fit inside of adapter receiving cavity
430 of tip 400. The shape of nose portion 110, and the complementary shape of adapter
receiving cavity 430, may be selected to suit any particular need or application.
Several different shapes have been used in prior GET systems, and any suitable general
shape could be selected. The nose portion 110 includes opposite sloping top and bottom
surfaces 111, 112 which slope towards one another and toward two opposite flat surfaces
113, 114, and a flat front surface 115. The nose portion 110 also includes two opposite
side surfaces 116, 117.
[0030] Opposite the nose portion 110 is the rear portion 118 which may include a second
adapter receiving cavity 119. In this embodiment, as is known in this field, adapter
100 is configured to be received onto a second adapter that is mounted to a work tool.
The second adapter (not shown) would include a nose portion that complements the second
adapter receiving cavity 119.
[0031] On side surface 117 is formed a post 120. Post 120 in this embodiment is of a generally
conical shape. Other shapes could be selected to suit other designs. Post 120 includes
a substantially conical surface 121, and a substantially flat end surface 122. As
seen in FIG. 17, conical surface 121 defines a central axis A of the cone shape. Conical
surface 121 is formed at a taper angle β of approximately 10-30 degrees, and more
preferably about 20 degrees. The adapter 100 defines a plane of symmetry B as illustrated
in FIG. 17 (the adapter 100 is generally symmetrical about the plane B, discounting
the post 120 and related structure). The angle α between plane B and axis A is approximately
65-85 degrees, and more preferably about 75 degrees.
[0032] Adapter 100 also includes a half-annular-shaped cut 130 into the side surface 117
immediately adjacent and behind (in the direction of rear portion 118) the post 120.
Immediately adjacent and behind (in the direction of rear portion 118), the adapter
100 also includes a rail 140 raised above the side surface 117. Rail 140 is generally
sized and shaped to match slot 410 of tip 400.
[0033] FIGS. 15-16 show sectional views of the tip 400, bushing retainer 300, and lock 200
mounted to adapter 100. FIG. 15 shows the lock 200 rotated to its locking position
so the tip 400 cannot be removed from adapter 100. FIG. 16 shows the lock 200 rotated
to its unlocking position so that the tip 400 can slide in the direction of arrow
A off of adapter 100. In each view, rail 140 is shown positioned in slot 410 where
is serves to block dirt and other debris from entering into slot 410. If dirt and
other debris were allowed to enter slot 410, they may become impacted and make removal
of the tip 400 difficult because post 120 must slide through slot 410 when the tip
is removed.
[0034] With central axis A of post 120 positioned at an angle with respect to the plane
of symmetry B, FIG. 15 shows that the rearward most portion of conical surface 121
which contacts lock 200 in the locking position is at an angle near perpendicular
to the direction of force of the tip 400 being pulled straight off of adapter 100
(as indicated by arrow A). This helps prevent the force of the tip 400 being pulled
off of adapter 100 from twisting the tip 400, deflecting out of position lock 200
and causing the lock 200 to slip off of post 120 in a failure. Positioning the post
120 in this manner also minimizes the magnitude of the reaction force that will tend
to push lock 200 into the lock cavity 420. The minimized reaction forces can be counteracted
by compressive forces in the tip 400.
[0035] FIG. 19 shows that when positioned in tip 400, retainer bushing 300 has a bottom
surface 334 set at an angle γ relative to the plane of symmetry B of tip 400 of approximately
5 to 25 degrees, and most preferably 15 degrees. Head portion 230 of lock 200 has
a bearing surface 236 that abuts and slides on bottom surface 334 of retainer bushing
300. With bottom surface 334 set at this angle, the lock 200 rotates between its locking
and unlocking position about an axis approximately parallel to central axis A of the
post 120.
Industrial Applicability
[0036] The foregoing ground engaging tool system may be used in industry to provide protection
and improved digging ability for buckets, blades and other work tools on construction
and mining machinery, and other types of machinery.
[0037] Aspects of the invention are:
- 1. A ground engaging tool system comprising:
a first element having ground engaging surfaces;
a second element having a post;
a lock rotatably positioned between the first element and the second element, the
lock including a slot into which the post is received;
wherein the lock is rotatable between a locking position where the post cannot slide
out of the slot, and an unlocking position where the post can slide out of the slot
and the first element may be separated from the second element.
- 2. A ground engaging tool system according to aspect 1 further comprising a retaining
bushing positioned between the lock and the first element.
- 3. A ground engaging tool system according to aspect 2 wherein a portion of the retaining
bushing overlaps the lock to releasably retain the lock and the retaining bushing
together.
- 4. A ground engaging tool system according to aspect 3 wherein a portion of the first
element overlaps the retaining bushing to releasably retain the retaining bushing
and the first element together.
- 5. A ground engaging tool system according to aspect 4 wherein the retaining bushing
is non-rotatably retained by the first element.
- 6. A ground engaging tool system comprising:
a first element having ground engaging surfaces and a lock cavity;
a retaining bushing releasably retained in the lock cavity;
a lock releasably retained by the retaining bushing, the lock being rotatably with
respect to the retaining bushing, the lock having an first slot formed therein.
- 7. A ground engaging tool system according to aspect 6 further comprising:
a second slot formed in the first element opening into the lock cavity;
wherein the lock may be rotated between an unlocking position where the first slot
and the second slot are substantially aligned, and a locking position where the first
slot and the second slot are not aligned.
- 8. A ground engaging tool system according to aspect 7 wherein one of the retaining
bushing and the lock comprises a tab, and the other of the retaining bushing and the
lock comprises a detent, and the tab is releasably retained in the detent when the
lock is rotated to the locking position.
1. An adapter (100) for coupling a ground engaging tool (400) to a work tool, the adapter
comprising:
a nose portion (110) shaped to fit inside a cavity formed in the ground engaging tool,
the nose portion (110) including a side surface (117);
a post (120) formed in the side surface (117) of the nose portion (110), the post
(120) including a side surface (121) and an end surface (122); and
a half-annular-shaped cut (130) extending into the side surface (117) of the nose
portion (110) and circumferentially around a rear portion of the post (120),
wherein the cut (130) is sized to receive a C-shaped portion (220) of a rotatable
lock (200) of the ground engaging tool, the C-shaped portion (220) defining a slot
(210) formed therein for accepting a portion of the post (120).
2. The adapter (100) of claim 1, in which the nose portion (110) further includes an
opposing side surface (116), opposite sloping top and bottom surfaces (111, 112),
and opposite flat surfaces (113, 114) coupled to the opposite sloping top and bottom
surfaces (111, 112), wherein the opposite sloping top and bottom surfaces (111, 112)
and the opposite flat surfaces (113, 114) extend between the opposite side surfaces
(116, 117).
3. The adapter (100) of claim 2, in which the nose portion (110) further includes a flat
front surface (115) coupled to the opposite flat surfaces (113, 114).
4. The adapter (100) of claim 1, in which the side surface (121) of the post (120) has
a conical shape.
5. The adapter (100) of claim 4, in which the side surface (121) of the post (120) defines
a central axis (A) of the conical shape, and in which the conical shape is formed
at a taper angle (β) relative to the central axis (A) of approximately 10 to 30 degrees.
6. The adapter (100) of claim 5, in which the taper angle (β) is approximately 20 degrees.
7. The adapter (100) of claim 5, in which the adapter defines a plane of symmetry (B),
and in which an angle (α) is formed between the central axis (A) and the plane of
symmetry (B) of approximately 65 to 85 degrees.
8. The adapter (100) of claim 7, in which the angle (α) is approximately 75 degrees.
9. The adapter (100) of claim 1, further comprising a rail (140) projecting from the
side surface (117) and positioned adjacent the cut (130), opposite the post (120).
10. The adapter (100) of claim 9, in which the rail (140) is further positioned on the
side surface (117) of the nose portion (110) to be inserted in a slot (410) of a side
portion (404) of the ground engaging tool when the adapter (100) is attached to the
ground engaging tool (400).
11. The adapter (100) of claim 10, in which the rail (140) is sized and shaped to match
the slot (410) of the ground engaging tool (400).
12. The adapter (100) of claim 1, further comprising a rear portion (118) opposite the
nose portion (110) and defining an adapter cavity (119).
1. Adapter (100) zum Ankoppeln eines Bodeneingriffswerkzeugs (400) an ein Arbeitswerkzeug,
wobei der Adapter umfasst:
einen Nasenbereich (110), der derart geformt ist, dass er in einen Hohlraum, der in
dem Bodeneingriffswerkzeug ausgebildet ist, passt, wobei der Nasenbereich (110) eine
Seitenfläche (117) aufweist,
einen Vorsprung (120), der in der Seitenfläche (117) des Nasenbereichs (110) ausgebildet
ist und eine Seitenfläche (121) und eine Stirnfläche (122) aufweist, und
einen halbringförmigen Einschnitt (130), der sich in die Seitenfläche (117) des Nasenbereichs
(110) und umfänglich um einen rückwärtigen Bereich des Vorsprungs (120) herum erstreckt,
wobei der Einschnitt (130) derart dimensioniert ist, dass ein C-förmiger Bereich (220)
eines drehbaren Verschlusses (200) des Bodeneingriffswerkzeugs aufnehmbar ist, wobei
der C-förmige Bereich (220) einen darin ausgebildeten Schlitz (210) zum Aufnehmen
eines Bereichs des Vorsprungs (120) definiert.
2. Adapter (100) nach Anspruch 1, bei dem der Nasenbereich (110) ferner eine gegenüberliegende
Seitenfläche (116), einander gegenüberliegende obere und untere Schrägflächen (111,
112) und sich gegenüberliegende flache Flächen (113, 114), die mit den sich gegenüberliegenden
oberen und unteren Schrägflächen verbunden sind, aufweist, wobei sich die einander
gegenüberliegenden oberen und unteren Schrägflächen (111, 112) und die sich gegenüberliegenden
flachen Flächen (113, 114) zwischen den sich gegenüberliegenden Seitenflächen (116,
117) erstrecken.
3. Adapter (100) nach Anspruch 2, bei dem der Nasenbereich (110) ferner eine flache vordere
Fläche (115) aufweist, die mit den sich gegenüberliegenden flachen Flächen (113, 114)
verbunden ist.
4. Adapter (100) nach Anspruch 1, bei dem die Seitenfläche (121) des Vorsprungs (120)
eine konische Form hat.
5. Adapter (100) nach Anspruch 4, bei dem die Seitenfläche (121) des Vorsprungs (120)
eine Mittelachse (A) der konischen Form definiert, und bei dem die konische Form in
einem Kegelwinkel (β) relativ zu der Mittelachse (A) von ungefähr 10 bis 30 Grad ausgebildet
ist.
6. Adapter (100) nach Anspruch 5, bei dem der Kegelwinkel (β) ungefähr 20 Grad beträgt.
7. Adapter (100) nach Anspruch 5, bei dem der Adapter eine Symmetrieebene (B) definiert,
und bei dem ein Winkel (α) zwischen der Mittelachse (A) und der Symmetrieebene von
ungefähr 65 bis 85 Grad ausgebildet ist.
8. Adapter (100) nach Anspruch 7, bei dem der Winkel (α) ungefähr 75 Grad beträgt.
9. Adapter (100) nach Anspruch 1, der ferner eine Leiste (140) umfasst, die von der Seitenfläche
(117) herausragt und benachbart zu dem Einschnitt (130), gegenüber des Vorsprungs
(120) positioniert ist.
10. Adapter (100) nach Anspruch 9, bei dem die Leiste (140) ferner auf der Seitenfläche
(117) des Nasenbereichs (110) zum Einführen in einen Schlitz (410) eines Seitenbereichs
(404) des Bodeneingriffswerkzeugs positioniert ist, wenn der Adapter (100) an dem
Bodeneingriffswerkzeug (400) angebracht ist.
11. Adapter (100) nach Anspruch 10, bei dem die Leiste (140) derart dimensioniert und
geformt ist, dass sie mit dem Schlitz (410) des Bodeneingriffswerkzeugs (400) zusammenpasst.
12. Adapter (100) nach Anspruch 1, der ferner einen hinteren Bereich (118) umfasst, der
dem Nasenbereich (110) gegenüberliegt und einen Adapterhohlraum (119) definiert.
1. Adaptateur (100) pour coupler un outil d'engagement avec le sol (400) à un outil de
travail, l'adaptateur comprenant :
une partie de nez (110) formée pour s'adapter à l'intérieur d'une cavité formée dans
l'outil d'engagement avec le sol, la partie de nez (110) comprenant une surface latérale
(117) ;
une broche (120) formée dans la surface latérale (117) de la partie de nez (110),
la broche (120) comprenant une surface latérale (121) et une surface d'extrémité (122)
; et
une coupe de forme semi-annulaire (130) s'étendant dans la surface latérale (117)
de la partie de nez (110) et circonférentiellement autour d'une partie arrière de
la broche (120),
dans lequel la coupe (130) est dimensionnée pour recevoir une partie en forme de C
(220) d'un verrou rotatif (200) de l'outil d'engagement avec le sol, la partie en
forme de C (220) définissant une fente (210) formée dans celle-ci pour recevoir une
partie de la broche (120).
2. Adaptateur (100) selon la revendication 1, dans lequel la partie de nez (110) comprend
en outre une surface latérale opposée (116), des surfaces supérieure et inférieure
inclinées opposées (111, 112), et des surfaces plates opposées (113, 114) couplées
aux surfaces supérieure et inférieure inclinées opposées (111, 112), dans lequel les
surfaces supérieure et inférieure inclinées opposées (111, 112) et les surfaces plates
opposées (113, 114) s'étendent entre les surfaces latérales opposées (116, 117).
3. Adaptateur (100) selon la revendication 2, dans lequel la partie de nez (110) comprend
en outre une surface frontale plate (115) couplée aux surfaces plates opposées (113,
114).
4. Adaptateur (100) selon la revendication 1, dans lequel la surface latérale (121) de
la broche (120) a une forme conique.
5. Adaptateur (100) selon la revendication 4, dans lequel la surface latérale (121) de
la broche (120) définit un axe central (A) de la forme conique, et dans lequel la
forme conique est formée avec un angle de conicité (β) par rapport à l'axe central
(A) d'environ 10 à 30 degrés.
6. Adaptateur (100) selon la revendication 5, dans lequel l'angle de conicité (β) est
d'environ 20 degrés.
7. Adaptateur (100) selon la revendication 5, dans lequel l'adaptateur définit un plan
de symétrie (B) et dans lequel un angle (α) est formé entre l'axe central (A) et le
plan de symétrie (B) d'environ 65 à 85 degrés.
8. Adaptateur (100) selon la revendication 7, dans lequel l'angle (α) est d'environ 75
degrés.
9. Adaptateur (100) selon la revendication 1, comprenant en outre un rail (140) faisant
saillie de la surface latérale (117) et positionné à côté de la coupe (130), à l'opposé
de la broche (120).
10. Adaptateur (100) selon la revendication 9, dans lequel le rail (140) est en outre
positionné sur la surface latérale (117) de la partie de nez (110) pour être inséré
dans une fente (410) d'une partie latérale (404) de l'outil d'engagement avec le sol
lorsque l'adaptateur (100) est fixé à l'outil d'engagement avec le sol (400).
11. Adaptateur (100) selon la revendication 10, dans lequel le rail (140) est dimensionné
et formé pour correspondre à la fente (410) de l'outil d'engagement avec le sol (400).
12. Adaptateur (100) selon la revendication 1, comprenant en outre une partie arrière
(118) opposée de la partie de nez (110) et définissant une cavité d'adaptateur (119).